Study of chemical profile and of lines crossing using blue and black ink pens by LDI (+) MS and LDI (+) imaging

Almeida, Camila Medeiros de; Sales, Daniele D.; Tosato, Francesca; Santos, Nayara A. dos; Filho, João Francisco Allochio; Macrino, Clebson J.; Pinto, Fernanda E.; Filgueiras, Paulo R.; Romão, Wanderson

doi:10.1016/j.microc.2019.05.002

Cited by 15 publications

(7 citation statements)

References 56 publications

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“…including any other technology used to prepare the document. The following 64 articles [ [548] , [549] , [550] , [551] , [552] , [553] , [554] , [555] , [556] , [557] , [558] , [559] , [560] , [561] , [562] , [563] , [564] , [565] , [566] , [567] , [568] , [569] , [570] , [571] , [572] , [573] , [574] , [575] , [576] , [577] , [578] , [579] , [580] ] [ [581] , [582] , [583] , [584] , [585] , [586] , [587] , [588] , [589] , [590] , [591] , [592] , [593] , [594] , [595] , [596] , [597] , [598] , [599] , [600] , [601] , [602] , [603] , [604] , [605] , [606] , [607] , [608] , [609] , [610] , [611] ], combined with 17 presentations [...…”

Section: Forensic Document Examinationunclassified

“…Almeida et al [ 564 ] proposed a non-destructive method for the characterization and order of ballpoint pen ink line crossings. They used laser desorption ionization mass spectrometry (LDI-MS) and LDI mass spectrometry imaging (LDI-MSI) to determine specific information on the chemical composition of the material without destroying the spatial location of the components, thereby allowing for sequencing of the strokes.…”

Section: Forensic Document Examinationmentioning

confidence: 99%

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Interpol questioned documents review 2019–2022

Deviterne-Lapeyre

Ibrahim²

2023

Forensic Science International: Synergy

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Section: Forensic Document Examinationunclassified

Section: Forensic Document Examinationmentioning

confidence: 99%

Interpol questioned documents review 2019–2022

Deviterne-Lapeyre

Ibrahim²

2023

Forensic Science International: Synergy

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“…Especificamente para o cruzamento de traços entre duas canetas esferográficas, métodos como a espectrometria de massas por LDI-MS (ALMEIDA et al, 2019), a espectroscopia de infravermelho (BRITO et al, 2019), a espectroscopia de Raman (BORBA et al, 2017) e a análise por VSC®6000 (MARTINS et al, 2019), também com análise estatística multivariada, têm sido estudados recentemente para determinar a ordem cronológica dos traços apostos no cruzamento. Entretanto, mesmo com diversas técnicas sendo estudadas, a determinação de prioridade de cruzamento de traços entre duas canetas esferográficas é ainda um desafio para a perícia, pois é muito difícil determinar a prioridade quando as tintas das canetas se misturam.…”

Section: Estudo De Cruzamento De Traços De Tintas De Canetas Esferogr...unclassified

O Estudo de Tintas de Canetas Esferográficas: uma Revisão para a Abordagem Pericial em Documentoscopia Forense

Gorziza

Carvalho

González

et al. 2022

Rev. Bras. Cienc. Pol.

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Dentro da área da Documentoscopia Forense, a análise de tintas de canetas esferográficas requer o conhecimento de métodos analíticos e de interpretação de resultados. Esta revisão busca esclarecer sobre essas técnicas, bem como compilar estudos de pesquisas recentes na área, visando contribuir para o melhor entendimento e consequente abordagem do assunto em laudos periciais, por Peritos em Documentoscopia. O conhecimento em técnicas de separação, como a cromatografia; em técnicas de espectrometria de massas; em métodos espectroscópicos e em análise estatística multivariada são essenciais para a resolução de questões judiciais relativas à análise de tintas de canetas.

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“…8 Despite the CBB's efforts, counterfeit activities continue to grow; the highest values of Brazilian banknotes (R$100 and R$50) are the main targets, totaling 271,453 counterfeits in 2019 and comprising 55% of the total seizure. 6 To verify the authenticity of documents, a visual analysis is first performed followed by more detailed analytical examinations, 2 such as video spectral comparator (VSC), Raman spectroscopy, 9,10 thin layer chromatography (TLC), 11 X-ray fluorescence, 12 capillary electrophoresis, 13 mass spectrometry (MS), [14][15][16] portable near-infrared spectroscopy 1,17 and terahertz spectroscopy. 18 However, some of these techniques, mainly TLC, require a sample preparation step, which can potentially destroy material evidence.…”

Section: Introductionmentioning

confidence: 99%

Use of a Portable Microscope Combined with a Smartphone to Determine the Authenticity of Brazilian Banknotes and National Driver’s Licenses

Costa¹,

Vittorazzi²,

Barbosa³

et al. 2022

J. Braz. Chem. Soc.

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This study proposed using a portable microscope combined with a smartphone and application (PhotoMetrix® application) to evaluate the authenticity of Brazilian banknotes (R$50 and R$100) and national driver’s licenses (NDL) through image acquisition (Samsung S7) and chemometric treatment (principal component analysis (PCA)). Six regions of the banknote were analyzed: holographic band; lower and upper tactile regions containing the number referring to the value of the note; microprints above the effigy (obverse); and numbers and the surroundings of the animal formed by microprints (reverse). For NDLs, the regions were the following: the coat of arms of the republic; the state map with microprints; optical ink variation; distorted positive microletters with technical failure; negative guilloche; typographic numbering; micro letter wire; and region with line printing. For the chemometric study with Photometrix®, we selected a region of interest (ROI) of 32 × 32 and 64 × 64 pixels with autoscaled data using the channels red (R), green (G), blue (B), hue (H), saturation (S), value (V), lightness (L) and intensity (I). We obtained excellent results for differentiating banknotes and NDLs, both by visual and chemometric analyses (PCA). This study demonstrates the effectiveness of using a portable microscope and a smartphone as a portable forensic tool that is fast, robust, low-cost and reliable.

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Study of chemical profile and of lines crossing using blue and black ink pens by LDI (+) MS and LDI (+) imaging

Cited by 15 publications

References 56 publications

Interpol questioned documents review 2019–2022

Interpol questioned documents review 2019–2022

O Estudo de Tintas de Canetas Esferográficas: uma Revisão para a Abordagem Pericial em Documentoscopia Forense

Use of a Portable Microscope Combined with a Smartphone to Determine the Authenticity of Brazilian Banknotes and National Driver’s Licenses

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